Allow traffic inter interface without NAT, still need "no nat"
I have implemented a few ASA firewall over the time and I have a question that I never solved.
There is an option on ASDM in the NAT screen that says " allow traffic between interfaces without NAT" or something like this. This option insert the "no nat-control" in the script and it is sopposed to allow traffic between interfaces without nat.
Even so every time I install a new ASA appliance and try to communicate Inside network with DMZ network I need an Static (inside,DMZ) or a "no nat" if I dont do that I see the error message:
No translation group foud for src x.x.x.x dst y.y.y.y
Does anybody knows why does it happens and if it's right to always need to use the no nat or static to communicate the two networks?
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...